Siberia’s Lena Delta The protected wilderness area of the Lena River, some 2,800 miles long and one of the largest rivers in the world, is the easternmost of the three great Siberian rivers that flow into the Arctic Ocean. Here taken from space courtesy of NASA , more at NASA – The Home Planet: Exploring the Whole Earth

The Water Planet Viewed from space, the most striking feature of our planet is the water. In both liquid and frozen form, it covers 75% of the Earth’s surface. It fills the sky with clouds. Water is practically everywhere on Earth, from inside the planet’s rocky crust to inside the cells of the human body. […]